What is the fastest way to force quit an app on Windows?

To know how to force quit windows using the fastest way possible use Alt + F4 command. To force close an unresponsive Windows app just choose the application while pressing the Alt and F4 keys together. You can force quit unresponsive apps using Alt + F4 but if this fails try opening Task Manager with Ctrl + Shift + Esc to end the program through right-click actions under the Processes tab. For stubborn apps, use Command Prompt (Admin) and type: taskkill /F /IM programname.exe The procedure ends the application through an immediate shutdown.